Blac Chyna got an impromptu bachelorette party in Las Vegas Saturday, courtesy of Mariah Carey. Carey performed her hit song "Touch My Body" at her residency show Mariah Carey #1 to Infinity at Caesar's Palace. the pop star brought the glamour model onstage as a special guest. Blac Chyna sat on a bed blindfolded as a male dancer performed a striptease and Carey teased her with a hot pink feather. Blac Chyna wrote, "It was truly a honor to grace the stage with Mariah tonight."